--- a/jdk/src/share/classes/java/util/spi/CurrencyNameProvider.java	Tue Aug 21 13:42:08 2012 +0100
+++ b/jdk/src/share/classes/java/util/spi/CurrencyNameProvider.java	Tue Aug 21 11:00:30 2012 -0700
@@ -29,6 +29,7 @@
 import java.util.Currency;
 import java.util.List;
 import java.util.Locale;
+import java.util.ResourceBundle.Control;
 
 /**
  * An abstract class for service providers that
@@ -109,11 +110,13 @@
         }
 
         // Check whether the locale is valid
-        List<Locale> avail = Arrays.asList(getAvailableLocales());
-        if (!avail.contains(locale)) {
-            throw new IllegalArgumentException("The locale is not available");
+        Control c = Control.getNoFallbackControl(Control.FORMAT_DEFAULT);
+        for (Locale l : getAvailableLocales()) {
+            if (c.getCandidateLocales("", l).contains(locale)) {
+                return null;
+            }
         }
 
-        return null;
+        throw new IllegalArgumentException("The locale is not available");
     }
 }